Conveyer



Aug. 11, 1931, c. R. CLAGHORN 1,318,115

CONVEYER Filed Oct. 19, 1926 2 Sheets-Sheet 1 I IN ENT R wag NW Nw Aug.11, 1931.

C. R. CLAGHORN CONVEYER Filed 00,12. 19, 1926 agg-wga 2 Sheets-Sheet 2INVENTOR .Paiented Aug. 11, 193i.

RAE T OFFICE CLARENCE R. CLAGI-IORN, OF BALTIMORE, MARYLAND CONVEYERApplication filed October 19, 1926. Serial No. 142,608.

This invention relates to conveyors and particularly to conveyer-s whichmay be extended or retracted to suit the conditions of their use.

In the mining of coal, and especially low coal, it is desirable toextend the conveyer as the mining operations advance in order to keepthe receiving end of the conveyer as close as possible to the workingface of the mine, and to retract the conveyer for allowing the movementof mining machinery therepast or for any other purpose as well as forspreading the conveyer at a mid point for the insertion of conveyersections when desired.

According to the present invention, 1 propose to provide a conveyerwhich may be conveniently extended or retracted at will. According tothe present invention, I further propose to provide a novel operatingmechanism through which the conveyer can be extended or retracted. Themechanism is of such nature that it can be employed in connection withconveyers of the trough type wherein the entire trough, including theadjustable extension for the conveyer, is reciprocated to effect aforward movement of the coal. Such a conveyer is shown in my copendingapplication, Serial No. 142,607, filed October 19, 1926.

In the accompanying drawings I have illustrated a present preferred formof my invention. In the drawings:

Fig. 1 is a side iew of a telescoping trough showing means for movingone sec tion relatively to another;

Fig. 2 is a section taken on the line Il-II of Fig. 1;

Fig. 3 is a detail, partly in section, showing the means for engagingthe movable trough;

Fig. 4 is a detail showing the frame for maintaining he engaging meansin adesired position;

Fig. 5 is a detail, partly in section, showing a portion of the troughmoving mechanism; and

Fig. 6 is a detail showing the operating lever for moving the movabletrough.

I provide a fixed or relatively stationary trough 2 formed so as tocontain material to be conveyed. Mounted on the fixed trough is amovable trough 3 adapted to slide longitudinally relatively thereto onstrips 4 connected to the movable trough. The fixed trough may bemounted on any suitable base (not shown).

Riveted to the trough section 2 is a bearing 5, in which is mounted forrotation a shaft 6 having connected thereto a lever 7. The lever 7 is ofsuch shape that a pipe 8 may be fitted over it to operate the lever.

Rigidly connected to the shaft 6 is a lever 9 having pivoted thereto atits extremity a link 10. The members 5 to 10 inclusive are 5 identicallyduplicated on both sides of the trough 2, as shown in Figs. 1 and 2. Thetwo opposite shafts 6 are rigidly connected by an extension (in so thatrotation of either shaft will cause corresponding rotation of the other.

Secured beneath the trough 2 are four brackets 11 arranged in pairs sideby side,

each bracket being longitudinally aligned with one of the oppositepairs. Each longitudinally aligned pair of brackets serves to guide arail 12 for slidable movement, as shown in Fig. 2. Riveted to the rails12 between the pairs of brackets is a U-shaped frame 13 extending underthe trough 2 so from side to side thereof. It will thus be seen that theframe 13 is adapted to slide longitudinally of the trough 2 by reason ofthe sliding engagement of the rails 12 with the brackets 11. e5

Secured near each end of the frame 13 is an angle member 1 1. Pivotedbetween the upward extension of the frame 13 and the angle member 1t oneach side of the frame, by a pin 15, is the end of the link 10 oppositsthat pivoted to the lever 9. By moving either or both of the levers 7 bymeans of the pipes 8, the frame 13 may be moved 1n either desireddirection longitudinally of the trough 2. i

Journaled to the frame 13 is a shaft 16, extending beneath the conveyerfrom one side to the other. The mechanism now to be described is exactlyduplicated on both sides of the trough and while the descripiii 7 r1,818,115

"opposing sides of the'ii shaped portion 20* hen the lever is in tionwill be confined to one side only, it will be understood that the sameapplies to the other side as well. lligidly connected to the shaft 16near the outer surface of the frame 13 is a cam 17 having two outwardlyextending portions 18 and 19. Also nonretatably connected to the shaft16 by means of a U-shaped portion 20 is a lover 21. The

are contained between two washers 22 and 23 which are maintained incontact therewith by pins passing through the shaft. The U-shapedportion of the lever 21 is made of such matei'al that it will notresiliently so that the upper part or handle may be sprung toward theconveyor a short distance.

Pivoted to the frame 13 at and 25, respectively, are two boll c anl1sand 27 having downwardly extending oppositely disposed arms 28 and 29,and outwardly extending arms 30 and 31 having at their extremities pawls32 and 33, respectively. EX- tending through holes provided in the arms28 andQS) therefor is a pin 3 t having thereon a coilc l spring disposedbetween the arms and and tending to move them apart .d consequently tomove both of the pawls 3:3 and 33 upwardly. \Vashers 36 and 37 areprovided on each end of the pin 31 to prevent the arms 28 and 29 frommoving other tea greater extent than desired.

The shaft 1.6 may be rotated in either directionfrom its mid position,as shown in Fig. 1., by means of the lever 21. If the lever 21 is movedto the right as indicated in B 1g. 3, the extension 18 of the cam 17contacts with; the arm 23 of the bell cranlcQG- t move the arm to theright and thus lower the pawl 3.1. This also urges the pawl 33 on theb-....l crank 27 upwardly by reason of the action of the spring 3Fastened to the frame 13 a bracket 38 extending around the lever 21 insuch a manner that the lever is maintained in contact with the bracketby the action of the U-shaped portion 20 of the lever. In thelevcr-contacting surface of the bracket 38 three notches, 39, 1:0 andi1,respectively, into which portion of the handle of the lever is adaptedto be sprung tounaintain thelevor 'in desired positions. lVhen thehandle is in the notch 10, the lever in mid osition as shown in Fig. 1.hen the lever is in the position shown in Fig. 3, its handle is in thenotch 41. The lever may be moved to the left to a position correspondingto that shown in Fig. 3, in which case its handle will lie in the notch39. in such position, the pawl 33 is moved down wardly and the pawl 32is urged upwardly. t nid position both pawis are urged upwardly by theaction of the spring The strip 1 which is connected to the movabletrough 3 has portions cut away to provide a series of projections 12which are spaced apart a distance sufficient to permit the end of theone of the pawls 32 or 33 to enter between them. The pawl 33 in Fig. 3is shown in engagement with one of said projections 42 while the pawl 32is shown drawn out of engagement with the projections. As the bellcranks are mounted on the frame 13, when the frame is caused to move tothe right by moving the lever 7 in that direction, the movable trough 3will be moved therewith by reason of the engagement of the pawl with oneof the projections 12. After the frame has been moved to the right adistance equivalent to that between one projcction and the next, thelever 7 and the frame 13 are moved to the left and the pawl 33 by reasonof its beveled surface will ride out of the space between theprojections 42, causing the spring to be further compressed, and whenthe frame has been moved a suiiicicnt distance to the lot", will engagethe adjacent projection 1-2 in a manner exactly similar to that in whichit engaged the former. By moving the lever 7 alternately to right andleft the movable trough 3 can thus be moved to the right any desireddistance.

\Vhen it is desired to move the trough to the left, the lever 21. ismoved to its left hand position and entered 39. This will cause the pawlto be withdrawn from engagement with a projection 42 and the pawl tomove upwardly to engage a projection. A left and right movement of thelever 7 will then cause the movable trough to move toward the left in amannerid ntical't th tin whi h it is moved to the right.

lVhen the lever 21 is in its mid position, both pawls 32 and 33 will beengaged with projections 12 so that movement of the lever 7 will merelycause the trough 3 to be reciprocated back and forth.

In order to prevent the trough 3 from being jarred out of its properrelative position with the trough 2. I provide guides 43 at suitableintervals bolted to the latter and extending over the edge of themovable trough, as shown in Fig. 2.

lVhile the invention is of primary impor tance in providing an actuatingmechanism for positively extending or retracting the forward terminal 3whereby it may be shoved forward toward the working face of the mine orother loading point, and quickly retracted to permit the pansa of miningmachinery thereby, it is also possible to hold the terminal 3 againstmovement and move the adjacent portion of the main convever 2. This isof considerable ad 'antage in spreading the main conveyor to permit ofthe insertion of additional sections therein.

I have shown and described a preferred embodiment of my invention, butit is to be into. the notch understood that it is not limited to theform shown, but may be otherwise embodied within the scope of thefollowing claims.

I claim:

1. A conveyer comprising a fixed trough,

a movable trough mounted for longitudinal movement thereon, and linearlyslidable means operably associated with said troughs by which a manualsource of power becomes efiective for moving said second mentioned 'tosaid fixed trough longitudinally in either direction.

3. A conveyer comprising a fixed trough, a movable trough mounted forlongitudinal movement thereon, a lever connected to said fixed trough, alink connected to said lever,

a frame connected to said link and longitudinally movable with respectto said fixed trough, and means operably associated with said frame forengaging said movable trough to move it relatively to sand fixed troughlongitudinally in either direction upon operation of said lever.

4. A conveyer comprising a fixed trough, a movable trough mounted forlongtiudinal movement thereon, a frame mounted for longitudinal movementon said fixed trough, means operably associated with said frame forengaging said movable trough to move it relatively to said fixed troughlongitudinally in either direction upon movement of said frame, andmeans for moving said frame.

5. A conveyer comprising a fixed trough, a movable trough mounted forlongitudinal movement thereon, a frame mounted for longitudinal movementon said fixed trough, a pawl connected to said frame and movable intoand out of engagement with said movable trough, and means for movingsaid frame.

6. A conveyer comprising a fixed trough, a movable trough mounted forlongitudinal movement thereon, a frame mounted for longitudinal movementon said fixed trough, a pawl connected to said frame and movable intoand out of engagement with said movable trough for moving it in onedirection, a second pawl associated with said frame and movable into andout of engagement with said movable trough for moving it in the oppositedirection, and means for moving said frame.

7 A conveyer comprising a fixed trough, a movable trough mounted forlongitudinal movement thereon, a frame mounted for longitudinal movementon said fixed trough, a pair of oppositely disposed pawls connected tosaid frame and selectively movable into and out of engagement with saidmovable trough for moving it in one direction or the other upon movementof said frame, and means for moving said frame.

8. A conveyer comprising a fixed trough, a movable trough mounted forlongitudinal movement thereon, a frame mounted for longitudinal movementon said fixed trough, a bell crank connected to said frame and having apawl operably associated therewith, means for actuating said bell crankto move said pawl into and out of engagement with said movable trough,and means for moving said frame.

9. A conveyer comprising a fixed trough, a movable trough mounted forlongitudinal movement thereon, a frame mounted for longitudinal movementon said fixed trough, a pair of bell cranks connected to said frame,each having a pawl for cooperation, with said movable trough, said pawlsbeing opposed to each other, means for selectively moving either bellcrank to a position in which the pawl thereof is out of cooperativerelation with said movable trough, and means for moving said frame inopposite directions.

10. A conveyer comprising a fixed trough, a movable trough mounted forlongitudinal movement thereon, a frame mounted for longitudinal movementon said fixed trough, a pair of bell cranks pivoted to said frame eachhaving a pawl for cooperation with said movable trough, a cam operablyassociated with said frame for selectively rendering either pawlinoperativeto effect movement of the movable trough in a desireddirection, and means for moving said frame.

, 11. A conveyer comprising a fixed trough, a movable trough mounted forlongitudinal movement thereon, a series of projections on said movabletrough, a frame mounted for longitudinal movement on said fixed trough,a pawl operably associated with said frame and movable into and out ofposition to engage one of said projections so as to move said movabletrough upon movement of said frame, and means for moving said frame.

12. A conveyer comprising a fixed trough, a movable trough mounted forlongitudinal movement thereon, a series of projections on said movabletrough, a frame mounted for longitudinal movement on said fixed trough,a pair of opposed pawls operably associated with said frame, one ofwhich is movable into and out of the path of said projections to movesaid movable trough in one direction and the other movable into and outof movable trough in the opposite direction tion and the other havingmeans thereon for engaging another of said projections to move saidmovable trough in the opposite direction upon movement of said frame,

means for actuating said bell cranks, and means for moving said frame.

14:. A conveyer comprisin a fixed trough, a movable trough mounted rorlongitudinal movement thereon, a series of projections on said fixedtrough, a frame mounted for longitudinal movement on said fixed trough,a pair of hell cranks pivoted to said frame, one of said bell crankshaving means therei on for engaging said projections to move saidmovable trough in one direction and the other having means thereon forengaging said projections to move said movable trough in the oppositedirection upon movement of said frame, a cam associated with said framefor actuating said bell cranks, a

Wleverlfor controlling said scam, and means for moving said frame.

15. A conveyor comprising a fixed trough, a movable trough mounted forlongitudinal movement thereon, a frame mounted for lon gitudinalmovement on said fixed trough, a pair of oppositely lisposed bell cranksconnected to said frame having arms lying side by side, each bell crankhaving a pawl thereon for engagement with said movable trough, means Iorengaging an arm of either bell crank as desired to hold a pawl out ofengagement with said movable trough so that the other pawl will beoperative for moving said movable trough on movement of said frame, andmeans for moving said frame.

16. A conveyer comprising a fixed trough, a movable trough mounted rorlongitudinal movement thereon, a. frame mounted for longitudinalmovement on said lined trough, a pair of oppositely disposed bell cranksconnected to said frame having arms lying side by side, a springinterposed between said arms to hold them apart, a pawl on each of saidbell cranks for engagement with said moveable trough, means for engagingan arm of either bell crank as desired to hold a pawl out of engagementwith said movable through so that the other pawl will be operative formoving said movable trough on movement of said frame, and means formoving said frame.

17. A conveyor comprising a fixed trough,

a movable trough mounted for longitudinal movement thereon, a framemounted for longitudinal movement on said fixed trough for moving saidmovable trough, oppositely disposed connecting means on said frame eacheffective for moving said movable trough in one direction only, andmeans for selectively actuating a desired one of said connecting meansfor engaging said movable trough.

18. A conveyor comprising a fixed trough, a movable trough mounted forlongitudinal movement thereon, a frame mounted for longitudinal movementon said fixed trough, a bell crank connected to said frame having afinger adapted to engage said movable trough for moving it upon movementof said frame, and means for holding said finger out of operativerelation with said movable trough.

19. T he combination with telescoping conveyer trough sections, of areciprocable pawl carrying member on one section, oppositely disposedpawls thereon, means for rendering one or the other of such pawlsoperable at will, and means on the other section for cooperation withthe pawls.

20. The con'ibination with telescoping con veycr trough sections, of alinearly reciprocable paw carrying member, opposed pawls thereon, meanson one of the trough sections forcooperation witn the pawls, and meansfor selectively operating the pawls.

Q1. The combination with telescoping conveyor trough sections, ofrcciprocable pawl carrying member, opposed pawls thereon, means on oneof the trough sections for engagement with the pawls, means for selectively operating the pawls, and a crank for operating th reciprocablepawl carrying member.

$22. A conveyer comprising fixed and movable troughs, linearly slidablemeans adapted to engage the mova le trough to move it relatively to theixed trougln and means connected with the fixed trough for moving suchlinearly slidable means.

A conveyor comprising fixed and movable troughs, slidable means adaptedto en gage the movable trough to move it relatively to the fixed trough,and. link and lever neans for moving such slidable means.

In testimony whereof I have hereunto set my hand.

CLAitENGE R. CLAGHORN.

